Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21240 found under Display Optoelectro by Giga Tronics Incorporated. The National Stock Number assigned to this part is 5980014312182, and the Federal Supply Class is 5980 Optoelectrical Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21240.